Alteration Residential
425 21st Av, San Francisco, Ca, 94121
Classificationotc alterations permitResidential Alteration
Reliable value$2,800
ContractorNot in source
Permit record
Parties
- Contractor
- Not in source
- Applicant
- Not in source
- Owner
- Not in source
- Architect
- Not in source
- Engineer
- Not in source
- Contractor license
- Not in source
Building & lot · PLUTO
- Building class
- Not in source
- Zoning district
- Not in source
- Lot area
- Not in source
- Year built
- Not in source
- Units (total)
- Not in source
- Units (residential)
- 1
- Units (commercial)
- Not in source
- Floor area
- Not in source
Parcel & enrichment
- Parcel APN
- 1523 003
- Climate zone (IECC)
- 3C
- Roof area (est.)
- Not derivable — no building-size signal for this permit
- HVAC tonnage (est.)
- Not derivable — no building-size signal for this permit
- Building type
- Not in source
- Building subtype
- Not in source
Geocode & dates
- Coordinates
- 37.7797, -122.4807
- Geocode confidence
- 95%
- Geocode source
- Not in source
- Issued
- Mar 2, 2021
- Applied
- Dec 28, 2020
- Work class
- Residential
Description
Source description
installation of fire sprinkler waterflow monitoring system. fire sprinkler (nfpa 13r) under 2020-0302-5863. building permit for expansion under 2017-0525-7706.
Status
- Current status
- issued
- Source status
- issued
Provenance
- First seen by PermitCore
- May 2, 2026 · 23:52 UTC
- Last seen
- May 12, 2026 · 00:06 UTC
- Last changed
- May 2, 2026 · 23:52 UTC
Data-quality checks0 of 12 flagged
0 of 12 data-quality rules flagged anything on this permit.
Checks not flagged
- Geocode out of bounds
- Geocode is sentinel
- Issued date in the future
- Issued date parse bug
- Issued date is placeholder
- Commercial units is placeholder
- Residential units out of bounds
- Residential units is placeholder
- Total units out of bounds
- Total units is placeholder
- Valuation out of bounds
- Valuation is placeholder
Project timeline at this parcel
- Mar 2, 2021This permitAlteration Residential · Issued$2,800
- May 14, 20201589915102728Alteration Residential · Issued
- Mar 2, 20201587854102728Alteration Residential · Finaled$20,000
- Oct 16, 20191572186102728Alteration Residential · Issued
- Mar 25, 20191464645102728Alteration Residential · Finaled$302,100
- Mar 19, 20101200825102728Alteration Residential · Issued
- Date not usable in source399377102728Alteration Residential · Finaled$5,500
Full permit history at this parcel · as of Jul 9, 2026.
Developer details
- Permit #
- 1607118102728
- Canonical ID
- 6:1607118102728
- Source permit ID
- 1607118102728